Will not stay running

Hi and thanks for using 2CarPros.

First, check to determine if there are any diagnostic trouble codes stored. They will help diagnose the issue. Here is a link that shows how it is done. All you need is a paper clip on this system.

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Next, if it runs and then shuts off, either you are losing spark or fuel pressure. It isn't uncommon for a bad crankshaft sensor to do what you described. Take a look through this link::

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Also, here are links that show how to check fuel pressure and for ignition spark. You should do this when the engine dies and doesn't restart.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Let me know if this helps or if you have other questions.

Take care,
Joe